Slides in this set

Slide 1

Slide 2

Carbon cycle1. Nutrient is taken up by producer as inorganic molecule.2. Producer incorporates nutrients into organic molecules.3. Producer is eaten by consumers-passing nutrient on.4. Nutrients passed along food chain as consumers are eaten.5. When consumer/producer dies, their complex molecules are broken down by SAPROBIOTIC MICRORGANISMS.6. The saprobiotic microorganisms secrete enzymes which breakdown the complex molecules into smaller molecules they can absorb by diffusion7. The saprobiotic microorganisms respire and release the carbon in its original state.…read more

Slide 3

The Earth has a finite amount of carbon. Living things are made up of carbon (often they are described as being carbon-based) and need carbon to survive. Carbon is also found in non-living things such as rocks, animal shells, the atmosphereand oceans. Carbon found in something living is called organic carbon.Carbon found in something non-living is called inorganic carbon. Carbon dioxideCarbon dioxide is an important gas in our atmosphere. It prevents heat from escaping and, in doing so, warms up the Earth's atmosphere. In a similar way to theglass of a greenhouse, it traps the heatfrom escaping and, for this reason, it is called agreenhouse gas.…read more

Slide 4

Photosynthesis? Respiration? And the atmosphere.Co2 in the atmosphere is the main source ofCarbon yet only makes up 0.04%.Photosynthesis and respiration is very important. There is short term fluctuations to oxygen and co2- variations in rates of photosynthesis and respiration.Co2- greater in the night as there is no light at night and no photosynthesisDaytime amount of co2 in the air is lower on a summers day than on a winters day due to higher rate of photosynthesis.…read more

Slide 6

If decay is prevented thenthe organisms may becomefossilised-over millions ofyears form carboncontaining sedimentary-chalk limestoneExcess co2 in theatmosphere dissolves in thewater, these stores helpkeep the co2 concentrationin the atmosphere constant.When atmospheric levelsare low these reservesoccur.Under water organisms usethis dissolved co2 to formmacromolecules whichmake up their bodies.…read more